text: #ifndef _DTC_H
  #define _DTC_H
  
  /*
   * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
   *
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
   * published by the Free Software Foundation; either version 2 of the
   * License, or (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   *  General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
   *                                                                   USA
   */
  
  #include <stdio.h>
  #include <string.h>
  #include <stdlib.h>
  #include <stdint.h>
  #include <stdbool.h>
  #include <stdarg.h>
  #include <assert.h>
  #include <ctype.h>
  #include <errno.h>
  #include <unistd.h>
  #include <inttypes.h>
  
  #include <libfdt_env.h>
  #include <fdt.h>
  
  #include "util.h"
  
  #ifdef DEBUG
  #define debug(...)	printf(__VA_ARGS__)
  #else
  #define debug(...)
  #endif
  
  #define DEFAULT_FDT_VERSION	17
  
  /*
   * Command line options
   */
  extern int quiet;		/* Level of quietness */
  extern int reservenum;		/* Number of memory reservation slots */
  extern int minsize;		/* Minimum blob size */
  extern int padsize;		/* Additional padding to blob */
  extern int alignsize;		/* Additional padding to blob accroding to the alignsize */
  extern int phandle_format;	/* Use linux,phandle or phandle properties */
  extern int generate_symbols;	/* generate symbols for nodes with labels */
  extern int generate_fixups;	/* generate fixups */
  extern int auto_label_aliases;	/* auto generate labels -> aliases */
  
  #define PHANDLE_LEGACY	0x1
  #define PHANDLE_EPAPR	0x2
  #define PHANDLE_BOTH	0x3
  
  typedef uint32_t cell_t;
  
  
  #define streq(a, b)	(strcmp((a), (b)) == 0)
  #define strneq(a, b, n)	(strncmp((a), (b), (n)) == 0)
  
  #define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
  
  /* Data blobs */
  enum markertype {
  	REF_PHANDLE,
  	REF_PATH,
  	LABEL,
  };
  
  struct  marker {
  	enum markertype type;
  	int offset;
  	char *ref;
  	struct marker *next;
  };
  
  struct data {
  	int len;
  	char *val;
  	struct marker *markers;
  };
  
  
  #define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
  
  #define for_each_marker(m) \
  	for (; (m); (m) = (m)->next)
  #define for_each_marker_of_type(m, t) \
  	for_each_marker(m) \
  		if ((m)->type == (t))
  
  void data_free(struct data d);
  
  struct data data_grow_for(struct data d, int xlen);
  
  struct data data_copy_mem(const char *mem, int len);
  struct data data_copy_escape_string(const char *s, int len);
  struct data data_copy_file(FILE *f, size_t len);
  
  struct data data_append_data(struct data d, const void *p, int len);
  struct data data_insert_at_marker(struct data d, struct marker *m,
  				  const void *p, int len);
  struct data data_merge(struct data d1, struct data d2);
  struct data data_append_cell(struct data d, cell_t word);
  struct data data_append_integer(struct data d, uint64_t word, int bits);
  struct data data_append_re(struct data d, uint64_t address, uint64_t size);
  struct data data_append_addr(struct data d, uint64_t addr);
  struct data data_append_byte(struct data d, uint8_t byte);
  struct data data_append_zeroes(struct data d, int len);
  struct data data_append_align(struct data d, int align);
  
  struct data data_add_marker(struct data d, enum markertype type, char *ref);
  
  bool data_is_one_string(struct data d);
  
  /* DT constraints */
  
  #define MAX_PROPNAME_LEN	31
  #define MAX_NODENAME_LEN	31
  
  /* Live trees */
  struct label {
  	bool deleted;
  	char *label;
  	struct label *next;
  };
  
  struct bus_type {
  	const char *name;
  };
  
  struct property {
  	bool deleted;
  	char *name;
  	struct data val;
  
  	struct property *next;
  
  	struct label *labels;
  };
  
  struct node {
  	bool deleted;
  	char *name;
  	struct property *proplist;
  	struct node *children;
  
  	struct node *parent;
  	struct node *next_sibling;
  
  	char *fullpath;
  	int basenamelen;
  
  	cell_t phandle;
  	int addr_cells, size_cells;
  
  	struct label *labels;
  	const struct bus_type *bus;
  };
  
  #define for_each_label_withdel(l0, l) \
  	for ((l) = (l0); (l); (l) = (l)->next)
  
  #define for_each_label(l0, l) \
  	for_each_label_withdel(l0, l) \
  		if (!(l)->deleted)
  
  #define for_each_property_withdel(n, p) \
  	for ((p) = (n)->proplist; (p); (p) = (p)->next)
  
  #define for_each_property(n, p) \
  	for_each_property_withdel(n, p) \
  		if (!(p)->deleted)
  
  #define for_each_child_withdel(n, c) \
  	for ((c) = (n)->children; (c); (c) = (c)->next_sibling)
  
  #define for_each_child(n, c) \
  	for_each_child_withdel(n, c) \
  		if (!(c)->deleted)
  
  void add_label(struct label **labels, char *label);
  void delete_labels(struct label **labels);
  
  struct property *build_property(char *name, struct data val);
  struct property *build_property_delete(char *name);
  struct property *chain_property(struct property *first, struct property *list);
  struct property *reverse_properties(struct property *first);
  
  struct node *build_node(struct property *proplist, struct node *children);
  struct node *build_node_delete(void);
  struct node *name_node(struct node *node, char *name);
  struct node *chain_node(struct node *first, struct node *list);
  struct node *merge_nodes(struct node *old_node, struct node *new_node);
  void add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
  
  void add_property(struct node *node, struct property *prop);
  void delete_property_by_name(struct node *node, char *name);
  void delete_property(struct property *prop);
  void add_child(struct node *parent, struct node *child);
  void delete_node_by_name(struct node *parent, char *name);
  void delete_node(struct node *node);
  void append_to_property(struct node *node,
  			char *name, const void *data, int len);
  
  const char *get_unitname(struct node *node);
  struct property *get_property(struct node *node, const char *propname);
  cell_t propval_cell(struct property *prop);
  cell_t propval_cell_n(struct property *prop, int n);
  struct property *get_property_by_label(struct node *tree, const char *label,
  				       struct node **node);
  struct marker *get_marker_label(struct node *tree, const char *label,
  				struct node **node, struct property **prop);
  struct node *get_subnode(struct node *node, const char *nodename);
  struct node *get_node_by_path(struct node *tree, const char *path);
  struct node *get_node_by_label(struct node *tree, const char *label);
  struct node *get_node_by_phandle(struct node *tree, cell_t phandle);
  struct node *get_node_by_ref(struct node *tree, const char *ref);
  cell_t get_node_phandle(struct node *root, struct node *node);
  
  uint32_t guess_boot_cpuid(struct node *tree);
  
  /* Boot info (tree plus memreserve information */
  
  struct reserve_info {
  	uint64_t address, size;
  
  	struct reserve_info *next;
  
  	struct label *labels;
  };
  
  struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len);
  struct reserve_info *chain_reserve_entry(struct reserve_info *first,
  					 struct reserve_info *list);
  struct reserve_info *add_reserve_entry(struct reserve_info *list,
  				       struct reserve_info *new);
  
  
  struct dt_info {
  	unsigned int dtsflags;
  	struct reserve_info *reservelist;
  	uint32_t boot_cpuid_phys;
  	struct node *dt;		/* the device tree */
  	const char *outname;		/* filename being written to, "-" for stdout */
  };
  
  /* DTS version flags definitions */
  #define DTSF_V1		0x0001	/* /dts-v1/ */
  #define DTSF_PLUGIN	0x0002	/* /plugin/ */
  
  struct dt_info *build_dt_info(unsigned int dtsflags,
  			      struct reserve_info *reservelist,
  			      struct node *tree, uint32_t boot_cpuid_phys);
  void sort_tree(struct dt_info *dti);
  void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
  void generate_fixups_tree(struct dt_info *dti, char *name);
  void generate_local_fixups_tree(struct dt_info *dti, char *name);
  
  /* Checks */
  
  void parse_checks_option(bool warn, bool error, const char *arg);
  void process_checks(bool force, struct dt_info *dti);
  
  /* Flattened trees */
  
  void dt_to_blob(FILE *f, struct dt_info *dti, int version);
  void dt_to_asm(FILE *f, struct dt_info *dti, int version);
  
  struct dt_info *dt_from_blob(const char *fname);
  
  /* Tree source */
  
  void dt_to_source(FILE *f, struct dt_info *dti);
  struct dt_info *dt_from_source(const char *f);
  
  /* FS trees */
  
  struct dt_info *dt_from_fs(const char *dirname);
  
  #endif /* _DTC_H */
  